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Finding the Fourth Proportional to 111,947.20, 167,920.80 and 110,910.40

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Solution

The fourth proportional to 111,947.20, 167,920.80 and 110,910.40 is: 166,365.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,947.20 : 167,920.80 = 110,910.40 : x
  2. Step 2: Convert to fraction form
    111,947.20/167,920.80 = 110,910.40/x
  3. Step 3: Cross multiply
    111,947.20x = 167,920.80 × 110,910.40
  4. Step 4: Simplify right side
    111,947.20x = 18,624,163,096.32
  5. Step 5: Solve for x
    x = 18,624,163,096.32/111,947.20
  6. Step 6: Final answer
    x = 166,365.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.